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%I #6 Mar 30 2012 16:52:08
%S 1,30,1800,1134000,27216000,583783200000,735566832000000,
%T 53591297760000000,256505356800000000,215539912286899200000000,
%U 9246662237107975680000000000,6380196943604503219200000000000,846215594625439374336000000000000,608171468659065776424960000000000000
%N Denominators of coefficients in Taylor series expansion of arccosh(cosec(x)*arctanh(x)).
%e x+7/30*x^3+211/1800*x^5+87583/1134000*x^7+1551091/27216000*x^9+...
%Y Cf. A012862.
%K nonn,frac
%O 0,2
%A _N. J. A. Sloane_, Dec 21 2011
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